晶化温度对硅灰微晶玻璃性能的影响  

Effect of Crystallization Temperature on Properties of Silicon Fume Glass-Ceramics

作　　者：钟康东 牛立斌[1] 左童瑶 张国琛 陈国芳 ZHONG Kangdong;NIU Libin;ZUO Tongyao;ZHANG Guochen;CHEN Guofang(School of Materials Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Ningxia Rong Hua Yuan Metallurgy Co.,Ltd.,Shizuishan 753200,China)

机构地区：[1]西安科技大学材料科学与工程学院,西安710054 [2]宁夏荣华缘特种新材料有限公司,石嘴山753200

出　　处：《硅酸盐通报》2024年第3期1103-1109,共7页Bulletin of the Chinese Ceramic Society

基　　金：陕西省重点研发计划项目(2023-YBGY-090)。

摘　　要：为响应国家对固体废弃物资源循环利用的号召,坚持以绿色发展为理念,本文以高硅废微硅粉为主要原料,采用整体析晶法制备了CaO-Al_(2)O_(3)-SiO_(2)系微晶玻璃,采用TG-DSC、XRD、SEM等分析方法表征了微晶玻璃的晶相种类和显微形貌,并测试了其理化性能。研究表明,在900℃下核化2 h并在1150℃晶化2 h后,可制备出以钙长石为主晶相的微晶玻璃,当晶化温度继续升高至1200℃后,微晶玻璃中出现少量气泡,内部出现缺陷,从而导致析晶效果和理化性能下降。该方法制备出的微晶玻璃具有优良的机械性能,抗折强度为93.58 MPa,维氏硬度为845.62 HV_(0.5),体积密度为2.88 g/cm^(3)。In order to respond to the national call for recycling of solid waste resources and adhere to the concept of green development,high-silicon waste silica fume was used as the main raw material,and CaO-Al_(2)O_(3)-SiO_(2)series glass-ceramics were prepared by the overall crystallization method.The crystal phase type and micromorphology of glass-ceramics were characterized by TG-DSC,XRD,SEM,and the physical and chemical properties of glass-ceramics were tested.The studies show that after 2 h nucleation at 900℃and the crystallization temperature is 1150℃for 2 h,glass-ceramics with anorthite as the main crystal phase can be prepared.When the crystallization temperature continues to rise to 1200℃,a small amount of bubbles appear in glass-ceramics,and internal defects appear,which results in the decline of crystallization effect and physical and chemical properties.The glass-ceramics prepared by this method have excellent mechanical properties,the flexural strength is 93.58 MPa,the Vickers hardness is 845.62 HV_(0.5),the bulk density is 2.88 g/cm^(3).

关 键 词：晶化温度 微晶玻璃 微硅粉 工业废渣 固体废弃物 整体析晶法 

分 类 号：TB321[一般工业技术—材料科学与工程]